News Views and Interviews

CASE HISTORY

Customer:

Scale Aviation - Australia

Problem:

• To meter and mix a reactive polyurethane with a gel time of three (3) minutes
• To fill 5,000 moulds
  each with approximately 5 - 20 ml of material

Previous Method:

• Hand measuring and mixing
• Applied using a jam tin fashioned with a spout.

Solution:

• Ratio-Pak Two Component Cartridges in 150:300 ml mix ratio and Static Mixers
• Air Operated Bi-Mixer applicator.

Benefits:

• Increased quality
• Massive material and time savings
• Overall cost per unit reductions
• Increased production
• Reduced turn around time
• Accurate mixing
• Degassing of individual material components prior to mixing

Customers Comment:

We have been using the system for over four years. We are very impressed at the increases in speed and efficiency. Our wastage has also been significantly reduced. The system has definitely allowed us to secure export orders which would previously not have been possible. We also make a point of not refilling cartridges or cleaning static mixers in order to maintain the high quality our product requires. Down time due to uncured product and consequential messing cleaning of moulds has been eliminated, thanks to using the air gun, which guarantees repetitious, controlled and accurate mixing.

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ABB Transmissions Case History

CASE HISTORY

Customer:

ABB Transmissions and Distribution Ltd

Problem:

To meter and mix a reactive two component epoxy with a mix ratio by volume of 1 to 5. The epoxy had a gel time of 90 minutes. After mixing, the material was poured down into a tube, totally encapsulating a sectionalisor used in outdoor, high voltage transmission cables. This was a very messy process. As the run sizes were small, a high cost meter mix machine was uneconomical.

Previous Method:

• Measure each component of the epoxy in plastic jars, then hand mix in a jar with a pouring lip.
• Pour approximately 120 ml of material down a tube, containing the sectionaliser, ensuring that it was totally encapsulated.

Solution:

• Ratio-Pak Two Component Cartridges in 150:750 ml mix ratio and Static Mixers.
• Air Operated Bi-Mixer Applicator.
• Filling of Cartridges by Svenic.

Benefits:

• Ensures that the correct mix ratio of 1 to 5 is being adhered to.
• A reduction in wastage and clean up
• A reduction in the time to apply the material.
• More accurate placement of material.
• A reduction in the cost per unit.
• Observes Occupational Health & Safety practices
• Eliminates safety risks.
• Eliminates air entrapment of material caused by hand mixing.
• Increased convenience as cartridges are prefilled.

Customers Comments:

For a number of years we had been mixing the material in plastic cooking jugs purchased from the local supermarket and mixing the material with a wooden coffee stick.

This of course, led to the problem that sometimes the material was spilt down the side of these units and had to be cleaned away. Also, more material was being mixed than was required.

The previous application certainly was not one that should be used in our type of factory, where we observe strict OH & S practices. As such, we sought the help of an engineer who put us in touch with Svenic.

We have developed a system where by we have assembled a number of these units on a trolley. The units are wheeled under the static mixer.  The operator then simply activates the applicator. The material is fed into the tube, encapsulating the electronic sectionalisors.